Hey Vogons ,

Recently i swaped graphics card in my xp rig from hd4890 to hd6850 . Every game i tested so far have hundreds fps but in doom3 i get 6-8 fps in main menu as well as in game .
Catalyst ver is 12.3 and i belive that its cause problems. Is there any way to bypass or fix this issue without reinstalling driver . As another version of driver might brake other game . Btw HD4890 has issues with crysis , there was all transparent expect terrain.
All other pc's spec E8600 , 4gb ram(usable 3 due 32 bit) , HD6850, Win XP sp3. Doom 3 was gog as well as disk version.